Throne of Ember and Ash- By: Amy Lyn Nolen

Nara has spent her life believing she is ordinary. Taken from her
quiet coastal village to the Sunspire - a fortress where dragons are
enslaved, magic is tightly controlled, and history belongs to those
in power - she expects to disappear among the new recruits.
Instead, the dragons recoil from her. Declared a threat and forced
to flee, Nara discovers the remnants of a forgotten civilization
where dragons once chose their riders and magic could never be
taken without consent. As the empire closes in, she must decide
whether to remain hidden - or embrace the power that could
shatter the Sunspire forever.